Home / 2,889.40-3,986.58-1,840.60

Finding the Fourth Proportional to 2,889.40, 3,986.58 and 1,840.60

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Solution

The fourth proportional to 2,889.40, 3,986.58 and 1,840.60 is: 2,539.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.40 : 3,986.58 = 1,840.60 : x
  2. Step 2: Convert to fraction form
    2,889.40/3,986.58 = 1,840.60/x
  3. Step 3: Cross multiply
    2,889.40x = 3,986.58 × 1,840.60
  4. Step 4: Simplify right side
    2,889.40x = 7,337,699.15
  5. Step 5: Solve for x
    x = 7,337,699.15/2,889.40
  6. Step 6: Final answer
    x = 2,539.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.